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Laboratories Inc. ' <br /> Environmental Testing Laboratory Since 1949 <br /> Shaw Project: Foothill Landfill Reported: 02/22/2010 12:27 <br /> 1326 North Market Boulevard Project Number: 124591 Groundwater <br /> Sacramento,CA 95834 Project Manager: Sheila Richgels <br /> Volatile Organic Analysis (EPA Method 8260) <br /> Quality Control Report- Precision & Accuracy <br /> Control Limits <br /> Source Source Spike Percent Percent <br /> Constituent Batch ID QC Sample Type Sample ID Result Result Added Units RPD Recovery RPD Recovery Lab Quals <br /> Benzene BTB0280 Matrix Spike 0917254-77 ND 26.441 25.000 ug/L 106 70-130 <br /> Matrix Spike Duplicate 0917254-77 ND 25.898 25.000 ug/L 2.1 104 20 70-130 <br /> Bromodichloromethane BTB0280 Matrix Spike 0917254-77 ND 25.559 25.000 ug/L 102 70-130 <br /> - - Matrix Spike Duplicate 0917254-77 ND 25.482 25.000 ug/L 0.3 102 20 70-130 <br /> Chlorobenzene BTB0280 Matrix Spike 0917254-77 ND 27.319 25.000 ug/L 109 70-130 <br /> - - -_ Matrix Spike Duplicate 0917254-77 ND 27.321 25.000 ug/L 0.0 109 20 70-130 <br /> Chloroethane BTB0280 Matrix Spike 0917254-77 ND 26.953 25.000 ug/L 108 70-130 <br /> Matrix Spike Duplicate 0917254-77 ND 26.994 25.000 ug/L 0.2 108 20 70-130 <br /> ich orobenzene BTB0280 Matrix Spike 0917254-77 ND 28.492 25.000 ug/L 114 70-130 <br /> Matrix Spike Duplicate 0917254-77 ND 28.658 25.000 ug/L 0.6 115 20 70-130 <br /> 1- (chloroethane BTB0280 Matrix Spike 0917254-77 ND 26.731 25.000 ug/L 107 70-130 <br /> - -- - - Matrix Spike Duplicate 0917254-77 ND 26.805 25.000 ug/L 0.3 107 20 70-130 <br /> 1- Ic loroethene BTB0280 Matrix Spike 0917254-77 ND 25.604 25.000 ug/L 102 70-130 <br /> Matrix Spike Duplicate 0917254-77 ND 25.529 25.000 ug/L 0.3 102 20 70-130 <br /> Toluene BTB0280 Matrix Spike 0917254-77 ND 26.734 25.000 ug/L 107 70-130 <br /> Matrix Spike Duplicate 0917254-77 ND 27.087 25.000 ug/L 1.3 108 20 70-130 <br /> Trichloroethene BTB0280 Matrix Spike 0917254-77 ND 28.599 25.000 ug/L 114 70-130 <br /> Matrix Spike Duplicate 0917254-77 ND 28.250 25.000 ug/L 1.2 113 20 70-130 <br /> ich oroethane-d4(Surrogate) BTB0280 Matrix Spike 0917254-77 ND 9.8442 10.000 ug/L 98.4 76-114 <br /> Matrix Spike Duplicate 0917254-77 ND 9.6309 10.000 ug/L 96.3 76-114 <br /> Toluene-d8(Surrogate) BTB0280 Matrix Spike 0917254-77 ND 9.7531 10.000 ug/L 97.5 88-110 <br /> - Matrix Spike Duplicate 0917254-77 ND 9.7172 10.000 ug/L 97.2 88-110 <br /> 4-Bromofluorobenzene(Surrogate) BTB0280 Matrix Spike 0917254-77 ND 9.6868 10.000 ug/L 96.9 86-115 <br /> - - Matrix Spike Duplicate 0917254-77 ND 9.6462 10.000 ug/L 96.5 86-115 <br /> Benzene BTB0371 Matrix Spike 0917254-80 ND 24.511 25.000 ug/L 98.0 70-130 <br /> - Matrix Spike Duplicate 0917254-80 ND 24.134 25.000 ug/L 1.5 96.5 20 70-130 <br /> The results in this report apply to the samples analysed in accordance with the chain of cusvodv document.This analytical report must he reproduced in its entirety. <br /> All results listed in this report are for the exclusive use of the submitting party. BC Laboratones,luc,assumes no responsibility for report alteration,separation,detachment or third party interpretation. <br /> 4100 Atlas Court Bakersfield,CA 93308 (661)327-4911 FAX(661)327-1918 www.bclabs.com Page 34 of 47 <br /> Certifications: California-ELAP Certification Number 1186; Nevada Administrative Code-NAC-445A <br />